Question

PLEASE THIS IS DUE AT MIDNIGHT LOL:

A plane flies 455 miles with the wind in the same time that it takes to fly 400 miles against the wind. If the wind is blowing at a speed of 12mph, whats the speed of the plane in still ai

Answer 1

• 186.55 mph

Explanation:

Let the speed of the plane be s

The speed of the plane in the same direction is

• s + 12

The speed of the plane against wind is

• s - 12

Time = distance/speed

• 455/(s + 12) = 400/(s - 12)

Solving for s

• 400(s + 12) = 455(s - 12)
• 400s + 400*12 = 455s - 455*12
• 455s - 400s = (400 + 455)*12
• 55s = 10260
• s = 10260/55
• s = 186.55 mph